This product is highly recommended! However, I think - you have to follow the instructions! It works very easily in the washing machine, and above all it works! Whether jacket, trousers or shoes: it is all good. We are very satisfied with this impregnation. The detergent to we had this, I would highly recommend them. I have impregnated the snow pants and snow boots so my daughter (in the washing machine). The snow then had no chance! The trousers remained next sledding dry! The cheap Boots let the wetness no longer as fast on his feet. Super impregnating 1+